A rawhide build fails with:

checking for clock_gettime in -lrt... yes
checking for setsockopt in -lsocket... no
checking for BN_init in -lcrypto... no
configure: error: "Error: libcrypto required."
RPM build errors:
error: Bad exit status from /var/tmp/rpm-tmp.y6ohOi (%build)
    Bad exit status from /var/tmp/rpm-tmp.y6ohOi (%build)


The configure test is not compatible with openssl-1.1.0 in rawhide, because it checks for BN_init:

| #ifdef __cplusplus
| extern "C"
| #endif
| char BN_init ();
| int
| main ()
| {
| return BN_init ();
|   ;
|   return 0;
| }
configure:21845: result: no
configure:21892: error: "Error: libcrypto required."

However in openssl-1.1.0 that function doesn't exist:

https://www.openssl.org/docs/man1.1.0/crypto/BN_new.html

Either it needs to be updated to work with openssl-1.1.0 or it needs to use compat-openssl instead.